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Re: computer modeling of diaphragms

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Nii,

What software are you using? What limitations, constraints, options are
available to you?

Is this an academic exercise or are you trying to apply your non-linear
analysis to an actual project?

Provide additional info and I will see if I can come up with anything
helpful.

Paul Feather
----- Original Message -----
From: "Nii Allotey" <nii50(--nospam--at)praisemail.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Friday, May 18, 2001 5:04 PM
Subject: Re: computer modeling of diaphragms


> thanks Paul:
>
>
>
> I accept what you said, but in my case I need to model it with a computer
program.  I am modeling the nonlinear response of an RC building with a
setback, that has inelastic diaphragms.  So if you have any ideas in this
direction, I'd appreciate it.
>
>
>
> Nii
>
>
>
> --- "Paul Feather" <pfeather(--nospam--at)san.rr.com>
>
> > wrote:
>
> >Analyze the flexible diaphragm by hand.  Flexible diaphragm distribution
is
>
> >so simple you could probably do it twice in the time it will take to
model,
>
> >and you will have greater confidence in the results.
>
> >
>
> >If this is the roof of an otherwise rigid building, distribute by hand
and
>
> >add to your rigid model as point loads.
>
> >
>
> >I do not understand the desire to build a complicated computer model to
>
> >analyze simple structural behavior.
>
> >
>
> >(I am not trying to be rude or offensive, this is just my observation)
>
> >
>
> >Paul Feather
>
> >----- Original Message -----
>
> >From: "Nii Allotey" <nii50(--nospam--at)praisemail.com>
>
> >To: <seaint(--nospam--at)seaint.org>
>
> >Sent: Friday, May 18, 2001 3:51 PM
>
> >Subject: computer modeling of diaphragms
>
> >
>
> >
>
> >> Dear Friends:
>
> >>
>
> >>
>
> >>
>
> >> I am trying to model a flexible diaphragm using a software that does
not
>
> >have shell elements.  I have only truss link, beam and spring elements.
I
>
> >have been toying with the idea of using an X-brace system to model it.
Does
>
> >anybody have any idea how to effectively model a flexible diaphragm with
>
> >only these availabe elements, or any reference the one can direct me to,
or
>
> >in general any info how the modelling of flexible diaphragms without
using
>
> >shell elements.
>
> >>
>
> >>
>
> >>
>
> >> Nii Allotey  E.I.T
>
> >>
>
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